[Healeys] Tach heat sensitive?

[Dallas Congleton]

Overdrive in use on both occasions ?


----- Original Message ----- 
From: "Tom" <ah3000me at gmail.com>
To: "Healey Mail List" <healeys at autox.team.net>
Sent: Thursday, August 18, 2011 10:43 AM
Subject: [Healeys] Tach heat sensitive?


> I've noticed that when I drive to work in the morning when it's cool
> (50-60F), my tach shows about 2500 RPM at 65 MPH.  When I return home at
> night when it's warm (80+ F), my tach shows about 3000 RPM at 65 MPH.
> 
> Any ideas about what's going on?
> 
> thanks,
> 
> Tom